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1. WO2011036797 - LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2011/036797
Publication Date 31.03.2011
International Application No. PCT/JP2009/066776
International Filing Date 28.09.2009
Chapter 2 Demand Filed 12.01.2010
IPC
H01M 4/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
CPC
H01M 10/052
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
H01M 2004/021
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
021Physical characteristics, e.g. porosity, surface area
H01M 2220/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2220Batteries for particular applications
20Batteries in motive systems, e.g. vehicle, ship, plane
H01M 4/133
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
133Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/366
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
362Composites
366as layered products
H01M 4/587
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587for inserting or intercalating light metals
Applicants
  • トヨタ自動車株式会社 TOYOTA JIDOSHA KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 上木 智善 UEKI, Tomoyoshi [JP]/[JP] (UsOnly)
  • 高畑 浩二 TAKAHATA, Koji [JP]/[JP] (UsOnly)
  • 高橋 昌也 TAKAHASHI, Masaya [JP]/[JP] (UsOnly)
  • 竹中 弘枝 TAKENAKA, Hiroe [JP]/[JP] (UsOnly)
  • 鷲見 万理子 SUMI, Mariko [JP]/[JP] (UsOnly)
  • 大久保 美香 OKUBO, Mika [JP]/[JP] (UsOnly)
Inventors
  • 上木 智善 UEKI, Tomoyoshi
  • 高畑 浩二 TAKAHATA, Koji
  • 高橋 昌也 TAKAHASHI, Masaya
  • 竹中 弘枝 TAKENAKA, Hiroe
  • 鷲見 万理子 SUMI, Mariko
  • 大久保 美香 OKUBO, Mika
Agents
  • 安部 誠 ABE, Makoto
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR
(FR) BATTERIE SECONDAIRE AU LITHIUM ET PROCÉDÉ POUR SA FABRICATION
(JA) リチウム二次電池及びその製造方法
Abstract
(EN)
Disclosed is a lithium secondary battery characterized in that: the battery is equipped with a negative electrode having a negative electrode collector and a negative electrode layer containing a negative electrode active substance formed on the surface of the collector; the negative electrode layer is configured with a negative electrode active substance layer, which is primarily composed of a negative electrode active substance, and an insulation layer that is formed on the negative electrode substance layer and primarily composed of an insulating filler; the ratio (Sb/Sa) of a pore specific surface area (Sb:m2/g) of the insulation layer with respect to a pore specific surface area (Sa:m2/g) of the negative electrode active substance layer, as measured by a mercury porosimeter, being 1.2 ≤ (Sb/Sa) ≤ 2.5.
(FR)
La présente invention se rapporte à une batterie secondaire au lithium caractérisée en ce que : la batterie comprend une électrode négative ayant un collecteur d'électrode négative et une couche d'électrode négative contenant une substance active d'électrode négative formée sur la surface du collecteur ; la couche d'électrode négative est configurée avec une couche de substance active d'électrode négative qui est principalement composée d'une substance active d'électrode négative, et avec une couche isolante qui est formée sur la couche de substance active d'électrode négative et qui est principalement composée d'une charge isolante ; le rapport (Sb/Sa) entre une surface spécifique de pore (Sb:m2/g) de la couche isolante et une surface spécifique de pore (Sa:m2/g) de la couche de substance active d'électrode négative, mesuré par un porosimètre au mercure, est de 1,2 ≤ (Sb/Sa) ≤ 2,5.
(JA)
 本発明により提供されるリチウム二次電池は、負極集電体および該集電体の表面に形成された負極活物質を含む負極層を有する負極を備え、かかる負極層は、負極活物質を主成分とする負極活物質層と、該負極活物質層上に形成された絶縁性フィラーを主成分とする絶縁層とにより構成されており、水銀ポロシメーターで測定される上記絶縁層における細孔比表面積(Sb:m/g)と上記負極活物質層における細孔比表面積(Sa:m/g)との比率(Sb/Sa)が、1.2≦(Sb/Sa)≦2.5を満たすことを特徴とする。
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